Thanks, all great questions.
Brakes are OEM. I would use for street use. I drive aggressively at times and am looking for a grabby, strong stop. Tires and wheels are same from NA2 back to NA1.
There is no fade or modulation. It is simply just a normal NSX brake. I preferred stopping much quicker with the NA2 setup. Am trying to replicate that.
Hmm, let's first clear up one thing: when you say NA1 vs NA2 what do you mean by NA1 and NA2? There has been some confusion here on Prime about whether NA1 means 3.0 and NA2 means 3.2. Which NA1 / NA2 definition are you using?
Reason we need to know many things is because brakes can perform well or poorly for even very simple reasons such as pin lubrication, pad material, age of rubber hoses.
When I tracked my '91 I had a hell of a time getting it stopped. I'd stand on the pedal and get very poor braking. And this with aggressive Cobalt track pads.
I'd crack rotors. Finally figured out that the original '91 calipers were all gummed up in spite of me replacing the pin lubrication with very high temperature synthetic grease. I cleaned out the calipers but yet when I'd check it again after tracking, the grease on the pins was like glue not at all like a lubricant. No wonder the brakes felt like $hit.
With new rotors, I could finally see that based on the wear pattern that the pads were touching the rotors only about 1" out from the hub, so I'd get horrible feel and stopping power. And when the brakes cooled, with the center of the rotor face and hub getting way hot and the outer (radially) portion of the rotor not being used and cool, there it went, cracked the rotors. Every time.
It could have been that the calipers were flexing, or that they were not sliding properly on the pins. The pads would wear at an angle.
I simply sourced a set of used '01 brackets, calipers, and rotors here on Prime (yes, I know, I didn't change the master to account for the larger bore size for what, the rears?) and I've been OK ever since (but I also retired it as a track car).
So, long way of saying that we need to ensure we're comparing apples and apples, that what you are putting on are up to snuff, and not performing poorly just because they're "NA1" vs "NA2". Many variables go into it.